| From | Kamal Mostafa <> | Subject | [PATCH 4.2.y-ckt 138/273] drm/i915: fix error path in intel_setup_gmbus() | Date | Mon, 7 Mar 2016 14:48:49 -0800 |
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4.2.8-ckt5 -stable review patch. If anyone has any objections, please let me know.
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From: Rasmus Villemoes <linux@rasmusvillemoes.dk>
commit ed3f9fd1e865975ceefdb2a43b453e090b1fd787 upstream.
This fails to undo the setup for pin==0; moreover, something interesting happens if the setup failed already at pin==0.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk> Fixes: f899fc64cda8 ("drm/i915: use GMBUS to manage i2c links") Signed-off-by: Jani Nikula <jani.nikula@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1455048677-19882-3-git-send-email-linux@rasmusvillemoes.dk (cherry picked from commit 2417c8c03f508841b85bf61acc91836b7b0e2560) Signed-off-by: Jani Nikula <jani.nikula@intel.com> Signed-off-by: Kamal Mostafa <kamal@canonical.com> --- drivers/gpu/drm/i915/intel_i2c.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/intel_i2c.c b/drivers/gpu/drm/i915/intel_i2c.c index a64f26c..e5d39f2 100644 --- a/drivers/gpu/drm/i915/intel_i2c.c +++ b/drivers/gpu/drm/i915/intel_i2c.c @@ -681,7 +681,7 @@ int intel_setup_gmbus(struct drm_device *dev) return 0; err: - while (--pin) { + while (pin--) { if (!intel_gmbus_is_valid_pin(dev_priv, pin)) continue; -- 2.7.0
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